<template>
  <el-image v-if="realSrc != null" :src="`${realSrc[0]}`" lazy fit="cover"
    :style="`width:${realWidth};height:${realHeight};`" :preview-src-list="realSrc">
    <div slot="error" class="image-slot">
      <i class="el-icon-picture-outline"></i>
    </div>
  </el-image>
</template>

<script>
import { listByIds } from "@/api/system/oss";

export default {
  name: "ImagePreview",
  props: {
    src: {
      type: String,
      default: ""
    },
    width: {
      type: [Number, String],
      default: ""
    },
    height: {
      type: [Number, String],
      default: ""
    }
  },
  data() {
    return {
      realSrc: null
    };
  },
  watch: {
    src: function () {
      this.loadRealSrc()
    }
  },
  created() {
    this.loadRealSrc()
  },
  computed: {
    realWidth() {
      return typeof this.width == "string" ? this.width : `${this.width}px`;
    },
    realHeight() {
      return typeof this.height == "string" ? this.height : `${this.height}px`;
    }
  },
  methods: {
    loadRealSrc() {
      this.$nextTick(() => {
        if (!this.src) {
          return;
        }
        if (typeof this.src == "string" && this.src.startsWith("http")) {
          this.realSrc = this.src.split(",");
        } else {
          listByIds(this.src).then(res => {
            this.realSrc = res.data.map(oss => oss.url);
            console.log(this.realSrc)
          })
        }

      })
    }
  }
};
</script>

<style lang="scss" scoped>
.el-image {
  border-radius: 5px;
  background-color: #ebeef5;
  box-shadow: 0 0 5px 1px #ccc;

  ::v-deep .el-image__inner {
    transition: all 0.3s;
    cursor: pointer;

    &:hover {
      transform: scale(1.2);
    }
  }

  ::v-deep .image-slot {
    display: flex;
    justify-content: center;
    align-items: center;
    width: 100%;
    height: 100%;
    color: #909399;
    font-size: 30px;
  }
}
</style>
